Nachweis und Bestimmung von Captan in Weinen durch Infrarot-Spektrophotometrie

Coppini, Dino; Albasini, A.

doi:10.1007/bf01216119

Mikrochim Acta

1968

DOI: 10.1007/bf01216119

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Nachweis und Bestimmung von Captan in Weinen durch Infrarot-Spektrophotometrie

Dino Coppini¹,

A. Albasini²

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1972

1976

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Cited by 2 publications

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“…The literature contains numerous reports on the determination of saccharin in foods and beverages. Various techniques were used; colorimetry (Fernandez-Flores et al, 1973), gas-liquid chromatography (Conacher and O'Brien, 1970; Ratchik and Viswanathen, 1975), infrared spectrophotometry (Coppini and Albasini, 1968), polarography (Lasheen, 1966), gravimetry (Oakley, 1947), and quite recently an ion-selective electrode method (Hazemoto et al, 1974). Basile (1966) reported an ultraviolet procedure for the determination of saccharin in wine, whereby saccharin was isolated as the free acid and interfering materials were eliminated by oxidation with alkaline permanganate solution.…”

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confidence: 99%

Quantitative determination of saccharin in food products by ultraviolet spectrophotometry

Hussein¹,

Jacin²,

Rodriguez³

1976

J. Agric. Food Chem.

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confidence: 99%

Quantitative determination of saccharin in food products by ultraviolet spectrophotometry

Hussein¹,

Jacin²,

Rodriguez³

1976

J. Agric. Food Chem.

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“…Once cyclohexylamine has been formed, however, the analysis times are within that allocated. (6) ( ) Spectrophotometric Determination of Saccharin-Ferroin Complex (16) (Optional) (c) Infrared Determination of Cyclamate and Saccharin (10,17) (Optional) II. Titration with Nitrous Acid Quantitative Infrared Determination of Organic Reaction Products (16) (d) Polarographic and Spectroscopic Determination of Lead after Reaction with Sulfate (19) V. Titration of Acid Forms of Cyclamate and Saccharin (a) Potentiometric, Conductometric, and Thermometric Titrations (Developmental) (9) A series of experiments, listed in Table 1, was devised, tested, and employed during three semesters of instrumental analysis by senior undergraduates and firstyear graduate students.…”

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Quantitative laboratory experiments based on reactions of cyclamates

Barnes¹

1972

J. Chem. Educ.

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Quantitative Laboratory ExperimentsBased on Reactions of Cyclamates The importance of creating experiments for quantitative and instrumental analysis laboratories which demonstrate both fundamental chemical measuring principles and practical industrial or commercial analysis cannot be too strongly emphasized in today's chemistry curriculum (1).Consistent with this philosophy, this report outlines a series of cohesive experiments based upon reactions of cyclamates for use in an introductory instrumental analysis laboratory. Cyclamates were of particular value because of recent wide public interest and publicity ( 2) and what appeared to be a lack of characterization of cyclamate reactions and determinations.The approach taken in the design of these experiments was to employ directly or with modification previously published cyclamate analyses, and to devise open-ended "developmental" experiments based upon analyses which "should work" for cyclamates because of analogy to known methods. The goals of this series of experiments were to develop a more-than routine student interest in the chemical reactions of the analysis, to apply a variety of instrumental measuring techniques, and to lay the ground-work for further research studies. The same approach and goals can be equally well applied to a variety of industrial or commercial products, and this report may serve as an outline for others interested in devising consistent, sequential experiments. Experimental Methods SelectionThe analytical chemistry of cyclamates prior to 1967 •was reviewed extensiv ly by Richardson (3) who has also developed two rapid cyclamate determinations (4, 5). A number of new determinations have been developed since Richardson's review {6-9). Cyclamates are sodium and calcium salts of N-alkyl-substituted sulfamates in which the alkyl substitution is cyclohexane {10). The chemical analyses are based upon relatively few different chemical reactions. In addition to classical elemental, gravimetric, volumetric, and separation techniques, cyclamates or cyclamate reaction products have been determined by spectrophotometric, electrochemical, and chromatographic methods. This variety of alternate approaches is ideal for the generation of a coherent series of laboratory experiments.

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Nachweis und Bestimmung von Captan in Weinen durch Infrarot-Spektrophotometrie

Cited by 2 publications

References 4 publications

Quantitative determination of saccharin in food products by ultraviolet spectrophotometry

Quantitative determination of saccharin in food products by ultraviolet spectrophotometry

Quantitative laboratory experiments based on reactions of cyclamates

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